./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1072b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1072b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be73f52cb7fef2aadd52631c6570f78c982923e81de6f6701c226e9332c8fefa --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:54:32,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:54:32,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:54:32,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:54:32,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:54:32,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:54:32,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:54:32,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:54:32,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:54:32,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:54:32,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:54:32,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:54:32,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:54:32,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:54:32,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:54:32,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:54:32,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:54:32,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:54:32,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:54:32,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:54:32,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:54:32,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:54:32,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:54:32,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:54:32,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:54:32,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:54:32,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:54:32,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:54:32,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:54:32,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:54:32,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:54:32,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:54:32,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:54:32,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:54:32,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:54:32,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:54:32,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:54:32,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:54:32,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:54:32,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:54:32,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:54:32,907 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 18:54:32,948 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:54:32,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:54:32,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:54:32,949 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:54:32,949 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:54:32,949 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:54:32,950 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:54:32,950 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:54:32,950 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:54:32,950 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:54:32,951 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:54:32,951 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:54:32,952 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:54:32,952 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:54:32,952 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:54:32,953 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:54:32,953 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:54:32,953 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:54:32,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:54:32,954 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:54:32,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:54:32,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:54:32,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:54:32,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:54:32,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:54:32,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:54:32,957 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:54:32,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:54:32,959 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:54:32,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:54:32,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:54:32,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:54:32,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:54:32,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:54:32,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:54:32,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:54:32,961 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:54:32,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:54:32,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:54:32,963 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:54:32,963 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:54:32,963 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be73f52cb7fef2aadd52631c6570f78c982923e81de6f6701c226e9332c8fefa [2021-11-25 18:54:33,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:54:33,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:54:33,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:54:33,338 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:54:33,339 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:54:33,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/float-newlib/float_req_bl_1072b.c [2021-11-25 18:54:33,415 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/data/40e68bdb3/36877a923db84382b400eba9a2890dc0/FLAG35dc88942 [2021-11-25 18:54:33,928 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:54:33,929 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/sv-benchmarks/c/float-newlib/float_req_bl_1072b.c [2021-11-25 18:54:33,941 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/data/40e68bdb3/36877a923db84382b400eba9a2890dc0/FLAG35dc88942 [2021-11-25 18:54:34,285 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/data/40e68bdb3/36877a923db84382b400eba9a2890dc0 [2021-11-25 18:54:34,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:54:34,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:54:34,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:54:34,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:54:34,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:54:34,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:54:34" (1/1) ... [2021-11-25 18:54:34,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dcaa9fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:34, skipping insertion in model container [2021-11-25 18:54:34,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:54:34" (1/1) ... [2021-11-25 18:54:34,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:54:34,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:54:34,566 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/sv-benchmarks/c/float-newlib/float_req_bl_1072b.c[1610,1623] [2021-11-25 18:54:34,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:54:34,578 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:54:34,623 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/sv-benchmarks/c/float-newlib/float_req_bl_1072b.c[1610,1623] [2021-11-25 18:54:34,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:54:34,643 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:54:34,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:34 WrapperNode [2021-11-25 18:54:34,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:54:34,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:54:34,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:54:34,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:54:34,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:34" (1/1) ... [2021-11-25 18:54:34,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:34" (1/1) ... [2021-11-25 18:54:34,708 INFO L137 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 86 [2021-11-25 18:54:34,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:54:34,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:54:34,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:54:34,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:54:34,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:34" (1/1) ... [2021-11-25 18:54:34,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:34" (1/1) ... [2021-11-25 18:54:34,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:34" (1/1) ... [2021-11-25 18:54:34,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:34" (1/1) ... [2021-11-25 18:54:34,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:34" (1/1) ... [2021-11-25 18:54:34,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:34" (1/1) ... [2021-11-25 18:54:34,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:34" (1/1) ... [2021-11-25 18:54:34,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:54:34,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:54:34,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:54:34,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:54:34,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:34" (1/1) ... [2021-11-25 18:54:34,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:54:34,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:54:34,808 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:54:34,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:54:34,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:54:34,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:54:34,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:54:34,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-25 18:54:34,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:54:34,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-25 18:54:34,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:54:34,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:54:34,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:54:34,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:54:34,980 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:54:34,982 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:54:35,237 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:54:35,262 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:54:35,263 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-25 18:54:35,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:54:35 BoogieIcfgContainer [2021-11-25 18:54:35,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:54:35,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:54:35,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:54:35,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:54:35,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:54:34" (1/3) ... [2021-11-25 18:54:35,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70565709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:54:35, skipping insertion in model container [2021-11-25 18:54:35,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:34" (2/3) ... [2021-11-25 18:54:35,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70565709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:54:35, skipping insertion in model container [2021-11-25 18:54:35,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:54:35" (3/3) ... [2021-11-25 18:54:35,293 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1072b.c [2021-11-25 18:54:35,299 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:54:35,299 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:54:35,399 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:54:35,413 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:54:35,414 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:54:35,441 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:54:35,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 18:54:35,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:54:35,460 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:54:35,460 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:54:35,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:54:35,468 INFO L85 PathProgramCache]: Analyzing trace with hash -691509709, now seen corresponding path program 1 times [2021-11-25 18:54:35,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:54:35,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155248283] [2021-11-25 18:54:35,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:54:35,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:54:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:54:35,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:54:35,676 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:54:35,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155248283] [2021-11-25 18:54:35,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155248283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:54:35,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:54:35,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:54:35,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285073680] [2021-11-25 18:54:35,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:54:35,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 18:54:35,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:54:35,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 18:54:35,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:54:35,729 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:54:35,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:54:35,771 INFO L93 Difference]: Finished difference Result 41 states and 63 transitions. [2021-11-25 18:54:35,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 18:54:35,774 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-25 18:54:35,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:54:35,783 INFO L225 Difference]: With dead ends: 41 [2021-11-25 18:54:35,783 INFO L226 Difference]: Without dead ends: 19 [2021-11-25 18:54:35,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:54:35,792 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:54:35,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:54:35,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-25 18:54:35,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-25 18:54:35,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:54:35,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-25 18:54:35,821 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 10 [2021-11-25 18:54:35,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:54:35,821 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-25 18:54:35,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:54:35,822 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-25 18:54:35,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 18:54:35,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:54:35,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:54:35,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:54:35,823 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:54:35,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:54:35,824 INFO L85 PathProgramCache]: Analyzing trace with hash 879367347, now seen corresponding path program 1 times [2021-11-25 18:54:35,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:54:35,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037605256] [2021-11-25 18:54:35,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:54:35,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:54:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:54:35,903 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 18:54:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:54:35,969 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 18:54:35,969 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 18:54:35,971 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 18:54:35,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:54:35,977 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-25 18:54:35,980 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 18:54:36,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:54:36 BoogieIcfgContainer [2021-11-25 18:54:36,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 18:54:36,021 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 18:54:36,021 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 18:54:36,021 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 18:54:36,022 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:54:35" (3/4) ... [2021-11-25 18:54:36,025 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 18:54:36,025 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 18:54:36,027 INFO L158 Benchmark]: Toolchain (without parser) took 1736.41ms. Allocated memory was 81.8MB in the beginning and 109.1MB in the end (delta: 27.3MB). Free memory was 43.5MB in the beginning and 69.2MB in the end (delta: -25.7MB). Peak memory consumption was 1.8MB. Max. memory is 16.1GB. [2021-11-25 18:54:36,027 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 81.8MB. Free memory is still 60.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:54:36,031 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.27ms. Allocated memory was 81.8MB in the beginning and 109.1MB in the end (delta: 27.3MB). Free memory was 43.3MB in the beginning and 82.5MB in the end (delta: -39.2MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. [2021-11-25 18:54:36,032 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.29ms. Allocated memory is still 109.1MB. Free memory was 82.3MB in the beginning and 80.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:54:36,037 INFO L158 Benchmark]: Boogie Preprocessor took 55.47ms. Allocated memory is still 109.1MB. Free memory was 80.6MB in the beginning and 79.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:54:36,038 INFO L158 Benchmark]: RCFGBuilder took 499.31ms. Allocated memory is still 109.1MB. Free memory was 79.2MB in the beginning and 67.6MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 18:54:36,041 INFO L158 Benchmark]: TraceAbstraction took 752.01ms. Allocated memory is still 109.1MB. Free memory was 67.1MB in the beginning and 69.7MB in the end (delta: -2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:54:36,042 INFO L158 Benchmark]: Witness Printer took 4.20ms. Allocated memory is still 109.1MB. Free memory was 69.7MB in the beginning and 69.2MB in the end (delta: 455.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:54:36,048 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 81.8MB. Free memory is still 60.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 338.27ms. Allocated memory was 81.8MB in the beginning and 109.1MB in the end (delta: 27.3MB). Free memory was 43.3MB in the beginning and 82.5MB in the end (delta: -39.2MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.29ms. Allocated memory is still 109.1MB. Free memory was 82.3MB in the beginning and 80.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 55.47ms. Allocated memory is still 109.1MB. Free memory was 80.6MB in the beginning and 79.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 499.31ms. Allocated memory is still 109.1MB. Free memory was 79.2MB in the beginning and 67.6MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 752.01ms. Allocated memory is still 109.1MB. Free memory was 67.1MB in the beginning and 69.7MB in the end (delta: -2.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.20ms. Allocated memory is still 109.1MB. Free memory was 69.7MB in the beginning and 69.2MB in the end (delta: 455.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 68]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 39, overapproximation of bitwiseAnd at line 52. Possible FailurePath: [L63] float x = -1.0f / 0.0f; [L64] CALL, EXPR trunc_float(x) [L14] __int32_t signbit, w, exponent_less_127; VAL [\old(x)=4294967296, x=4294967296] [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L20] signbit = w & 0x80000000 [L21] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=4294967296, exponent_less_127=255, signbit=-2, w=0, x=4294967296] [L22] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=4294967296, exponent_less_127=255, signbit=-2, w=0, x=4294967296] [L38] COND TRUE exponent_less_127 == 255 [L39] return x + x; VAL [\old(x)=4294967296, exponent_less_127=255, signbit=-2, w=0, x=4294967296] [L64] RET, EXPR trunc_float(x) [L64] float res = trunc_float(x); [L67] CALL, EXPR isinf_float(res) [L46] __int32_t ix; VAL [\old(x)=4294967297, x=4294967297] [L48] ieee_float_shape_type gf_u; [L49] gf_u.value = (x) [L50] EXPR gf_u.word [L50] (ix) = gf_u.word [L52] ix &= 0x7fffffff [L53] return ((ix) == 0x7f800000L); [L67] RET, EXPR isinf_float(res) [L67] COND TRUE !isinf_float(res) [L68] reach_error() VAL [res=4294967297, x=4294967296] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 20 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-25 18:54:36,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1072b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be73f52cb7fef2aadd52631c6570f78c982923e81de6f6701c226e9332c8fefa --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:54:38,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:54:38,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:54:39,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:54:39,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:54:39,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:54:39,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:54:39,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:54:39,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:54:39,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:54:39,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:54:39,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:54:39,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:54:39,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:54:39,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:54:39,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:54:39,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:54:39,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:54:39,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:54:39,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:54:39,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:54:39,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:54:39,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:54:39,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:54:39,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:54:39,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:54:39,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:54:39,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:54:39,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:54:39,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:54:39,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:54:39,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:54:39,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:54:39,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:54:39,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:54:39,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:54:39,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:54:39,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:54:39,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:54:39,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:54:39,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:54:39,172 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 18:54:39,228 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:54:39,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:54:39,229 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:54:39,229 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:54:39,230 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:54:39,231 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:54:39,231 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:54:39,231 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:54:39,231 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:54:39,232 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:54:39,232 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:54:39,232 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:54:39,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:54:39,234 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:54:39,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:54:39,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:54:39,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:54:39,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:54:39,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:54:39,236 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 18:54:39,236 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 18:54:39,236 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 18:54:39,237 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:54:39,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:54:39,237 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:54:39,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:54:39,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:54:39,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 18:54:39,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:54:39,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:54:39,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:54:39,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:54:39,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:54:39,240 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 18:54:39,240 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 18:54:39,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:54:39,241 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:54:39,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:54:39,242 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be73f52cb7fef2aadd52631c6570f78c982923e81de6f6701c226e9332c8fefa [2021-11-25 18:54:39,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:54:39,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:54:39,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:54:39,713 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:54:39,714 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:54:39,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/float-newlib/float_req_bl_1072b.c [2021-11-25 18:54:39,805 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/data/52abdf5c9/6cb7335064624bccbc62987d1bf0746a/FLAG9e6ecf41e [2021-11-25 18:54:40,431 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:54:40,431 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/sv-benchmarks/c/float-newlib/float_req_bl_1072b.c [2021-11-25 18:54:40,440 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/data/52abdf5c9/6cb7335064624bccbc62987d1bf0746a/FLAG9e6ecf41e [2021-11-25 18:54:40,806 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/data/52abdf5c9/6cb7335064624bccbc62987d1bf0746a [2021-11-25 18:54:40,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:54:40,811 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:54:40,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:54:40,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:54:40,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:54:40,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:54:40" (1/1) ... [2021-11-25 18:54:40,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28280262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:40, skipping insertion in model container [2021-11-25 18:54:40,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:54:40" (1/1) ... [2021-11-25 18:54:40,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:54:40,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:54:41,144 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/sv-benchmarks/c/float-newlib/float_req_bl_1072b.c[1610,1623] [2021-11-25 18:54:41,150 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:54:41,168 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:54:41,263 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/sv-benchmarks/c/float-newlib/float_req_bl_1072b.c[1610,1623] [2021-11-25 18:54:41,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:54:41,302 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:54:41,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:41 WrapperNode [2021-11-25 18:54:41,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:54:41,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:54:41,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:54:41,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:54:41,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:41" (1/1) ... [2021-11-25 18:54:41,343 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:41" (1/1) ... [2021-11-25 18:54:41,384 INFO L137 Inliner]: procedures = 19, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 86 [2021-11-25 18:54:41,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:54:41,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:54:41,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:54:41,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:54:41,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:41" (1/1) ... [2021-11-25 18:54:41,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:41" (1/1) ... [2021-11-25 18:54:41,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:41" (1/1) ... [2021-11-25 18:54:41,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:41" (1/1) ... [2021-11-25 18:54:41,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:41" (1/1) ... [2021-11-25 18:54:41,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:41" (1/1) ... [2021-11-25 18:54:41,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:41" (1/1) ... [2021-11-25 18:54:41,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:54:41,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:54:41,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:54:41,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:54:41,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:41" (1/1) ... [2021-11-25 18:54:41,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:54:41,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:54:41,520 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:54:41,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:54:41,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:54:41,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 18:54:41,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:54:41,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-25 18:54:41,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 18:54:41,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:54:41,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:54:41,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-25 18:54:41,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 18:54:41,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:54:41,731 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:54:41,734 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:54:41,948 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:54:41,955 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:54:41,955 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-25 18:54:41,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:54:41 BoogieIcfgContainer [2021-11-25 18:54:41,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:54:41,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:54:41,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:54:41,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:54:41,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:54:40" (1/3) ... [2021-11-25 18:54:41,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10465ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:54:41, skipping insertion in model container [2021-11-25 18:54:41,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:54:41" (2/3) ... [2021-11-25 18:54:41,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10465ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:54:41, skipping insertion in model container [2021-11-25 18:54:41,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:54:41" (3/3) ... [2021-11-25 18:54:41,982 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1072b.c [2021-11-25 18:54:41,988 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:54:41,989 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:54:42,048 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:54:42,058 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:54:42,058 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:54:42,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:54:42,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 18:54:42,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:54:42,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:54:42,084 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:54:42,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:54:42,092 INFO L85 PathProgramCache]: Analyzing trace with hash 936253238, now seen corresponding path program 1 times [2021-11-25 18:54:42,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:54:42,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172782030] [2021-11-25 18:54:42,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:54:42,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:54:42,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:54:42,133 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:54:42,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 18:54:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:54:42,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 18:54:42,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:54:42,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:54:42,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:54:42,421 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:54:42,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172782030] [2021-11-25 18:54:42,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172782030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:54:42,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:54:42,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:54:42,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470900320] [2021-11-25 18:54:42,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:54:42,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 18:54:42,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:54:42,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 18:54:42,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:54:42,477 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:54:42,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:54:42,504 INFO L93 Difference]: Finished difference Result 46 states and 68 transitions. [2021-11-25 18:54:42,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 18:54:42,507 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-25 18:54:42,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:54:42,521 INFO L225 Difference]: With dead ends: 46 [2021-11-25 18:54:42,521 INFO L226 Difference]: Without dead ends: 21 [2021-11-25 18:54:42,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:54:42,536 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:54:42,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:54:42,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-25 18:54:42,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-25 18:54:42,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:54:42,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-11-25 18:54:42,583 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 12 [2021-11-25 18:54:42,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:54:42,584 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-11-25 18:54:42,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:54:42,586 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-11-25 18:54:42,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 18:54:42,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:54:42,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:54:42,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:54:42,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:54:42,804 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:54:42,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:54:42,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1792517302, now seen corresponding path program 1 times [2021-11-25 18:54:42,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:54:42,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182094452] [2021-11-25 18:54:42,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:54:42,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:54:42,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:54:42,836 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:54:42,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 18:54:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:54:43,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 18:54:43,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:54:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:54:43,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:54:43,426 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:54:43,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182094452] [2021-11-25 18:54:43,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182094452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:54:43,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:54:43,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:54:43,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725930046] [2021-11-25 18:54:43,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:54:43,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:54:43,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:54:43,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:54:43,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:54:43,432 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:54:43,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:54:43,440 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2021-11-25 18:54:43,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:54:43,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-25 18:54:43,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:54:43,442 INFO L225 Difference]: With dead ends: 29 [2021-11-25 18:54:43,442 INFO L226 Difference]: Without dead ends: 21 [2021-11-25 18:54:43,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:54:43,445 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:54:43,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 14 Unchecked, 0.0s Time] [2021-11-25 18:54:43,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-25 18:54:43,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-25 18:54:43,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:54:43,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-11-25 18:54:43,452 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2021-11-25 18:54:43,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:54:43,453 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-11-25 18:54:43,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:54:43,453 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-11-25 18:54:43,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 18:54:43,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:54:43,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:54:43,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:54:43,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:54:43,671 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:54:43,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:54:43,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1848622454, now seen corresponding path program 1 times [2021-11-25 18:54:43,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:54:43,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272859143] [2021-11-25 18:54:43,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:54:43,673 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:54:43,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:54:43,679 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:54:43,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 18:54:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:54:43,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-25 18:54:43,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:54:44,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:54:44,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:54:44,194 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:54:44,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272859143] [2021-11-25 18:54:44,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272859143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:54:44,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:54:44,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 18:54:44,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707487343] [2021-11-25 18:54:44,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:54:44,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:54:44,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:54:44,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:54:44,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:54:44,198 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:54:44,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:54:44,242 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-11-25 18:54:44,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 18:54:44,243 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-25 18:54:44,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:54:44,244 INFO L225 Difference]: With dead ends: 30 [2021-11-25 18:54:44,244 INFO L226 Difference]: Without dead ends: 20 [2021-11-25 18:54:44,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:54:44,247 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:54:44,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 103 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 12 Unchecked, 0.0s Time] [2021-11-25 18:54:44,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-25 18:54:44,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-25 18:54:44,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:54:44,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-11-25 18:54:44,253 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 15 [2021-11-25 18:54:44,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:54:44,254 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-11-25 18:54:44,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:54:44,255 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-11-25 18:54:44,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-25 18:54:44,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:54:44,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:54:44,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:54:44,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:54:44,480 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:54:44,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:54:44,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1768065978, now seen corresponding path program 1 times [2021-11-25 18:54:44,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:54:44,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26041082] [2021-11-25 18:54:44,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:54:44,482 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:54:44,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:54:44,484 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:54:44,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 18:54:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:54:44,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 18:54:44,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:54:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:54:44,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:54:44,839 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:54:44,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26041082] [2021-11-25 18:54:44,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26041082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:54:44,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:54:44,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:54:44,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320610564] [2021-11-25 18:54:44,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:54:44,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:54:44,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:54:44,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:54:44,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:54:44,842 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:54:44,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:54:44,844 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-11-25 18:54:44,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:54:44,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-25 18:54:44,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:54:44,850 INFO L225 Difference]: With dead ends: 20 [2021-11-25 18:54:44,850 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 18:54:44,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:54:44,852 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:54:44,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 4 Unchecked, 0.0s Time] [2021-11-25 18:54:44,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 18:54:44,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 18:54:44,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:54:44,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 18:54:44,854 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-11-25 18:54:44,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:54:44,854 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 18:54:44,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:54:44,854 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 18:54:44,855 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 18:54:44,858 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 18:54:44,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:54:45,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:54:45,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 18:54:45,119 INFO L858 garLoopResultBuilder]: For program point L31-1(lines 31 35) no Hoare annotation was computed. [2021-11-25 18:54:45,119 INFO L854 garLoopResultBuilder]: At program point L31-2(lines 31 35) the Hoare annotation is: false [2021-11-25 18:54:45,119 INFO L858 garLoopResultBuilder]: For program point L23(lines 23 36) no Hoare annotation was computed. [2021-11-25 18:54:45,119 INFO L858 garLoopResultBuilder]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2021-11-25 18:54:45,120 INFO L854 garLoopResultBuilder]: At program point L15-2(lines 15 19) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24)) |ULTIMATE.start_trunc_float_~x#1|)) [2021-11-25 18:54:45,120 INFO L858 garLoopResultBuilder]: For program point L15-3(lines 15 19) no Hoare annotation was computed. [2021-11-25 18:54:45,120 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-25 18:54:45,120 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 18:54:45,120 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-25 18:54:45,121 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 68) no Hoare annotation was computed. [2021-11-25 18:54:45,121 INFO L854 garLoopResultBuilder]: At program point L53(lines 45 54) the Hoare annotation is: (= |ULTIMATE.start_isinf_float_#res#1| (_ bv1 32)) [2021-11-25 18:54:45,121 INFO L854 garLoopResultBuilder]: At program point L41(lines 13 42) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24)) |ULTIMATE.start_trunc_float_#res#1|)) [2021-11-25 18:54:45,121 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 18:54:45,122 INFO L858 garLoopResultBuilder]: For program point L25-1(lines 25 29) no Hoare annotation was computed. [2021-11-25 18:54:45,122 INFO L854 garLoopResultBuilder]: At program point L25-2(lines 25 29) the Hoare annotation is: false [2021-11-25 18:54:45,122 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 39) no Hoare annotation was computed. [2021-11-25 18:54:45,122 INFO L858 garLoopResultBuilder]: For program point L67(lines 67 70) no Hoare annotation was computed. [2021-11-25 18:54:45,122 INFO L858 garLoopResultBuilder]: For program point L22(lines 22 40) no Hoare annotation was computed. [2021-11-25 18:54:45,123 INFO L858 garLoopResultBuilder]: For program point L22-1(lines 22 40) no Hoare annotation was computed. [2021-11-25 18:54:45,123 INFO L858 garLoopResultBuilder]: For program point L47-1(lines 47 51) no Hoare annotation was computed. [2021-11-25 18:54:45,123 INFO L854 garLoopResultBuilder]: At program point L47-2(lines 47 51) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24)) |ULTIMATE.start_isinf_float_~x#1|)) [2021-11-25 18:54:45,123 INFO L858 garLoopResultBuilder]: For program point L47-3(lines 47 51) no Hoare annotation was computed. [2021-11-25 18:54:45,124 INFO L861 garLoopResultBuilder]: At program point L72(lines 56 73) the Hoare annotation is: true [2021-11-25 18:54:45,124 INFO L858 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2021-11-25 18:54:45,128 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-25 18:54:45,130 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 18:54:45,138 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 18:54:45,139 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 18:54:45,146 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 18:54:45,147 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 18:54:45,148 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 18:54:45,149 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 18:54:45,149 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 18:54:45,149 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 18:54:45,151 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 18:54:45,151 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 18:54:45,152 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 18:54:45,152 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 18:54:45,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:54:45 BoogieIcfgContainer [2021-11-25 18:54:45,153 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 18:54:45,154 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 18:54:45,154 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 18:54:45,154 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 18:54:45,155 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:54:41" (3/4) ... [2021-11-25 18:54:45,158 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 18:54:45,172 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-11-25 18:54:45,172 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-11-25 18:54:45,173 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-25 18:54:45,173 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-25 18:54:45,203 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)), ~Pluszero~LONGDOUBLE()) == x) [2021-11-25 18:54:45,204 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)), ~Pluszero~LONGDOUBLE()) == \result) [2021-11-25 18:54:45,204 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)), ~Pluszero~LONGDOUBLE()) == x) [2021-11-25 18:54:45,205 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \result == 1bv32 [2021-11-25 18:54:45,220 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 18:54:45,220 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 18:54:45,221 INFO L158 Benchmark]: Toolchain (without parser) took 4409.71ms. Allocated memory was 50.3MB in the beginning and 86.0MB in the end (delta: 35.7MB). Free memory was 26.2MB in the beginning and 60.1MB in the end (delta: -33.9MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. [2021-11-25 18:54:45,222 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 50.3MB. Free memory is still 29.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:54:45,222 INFO L158 Benchmark]: CACSL2BoogieTranslator took 488.58ms. Allocated memory was 50.3MB in the beginning and 69.2MB in the end (delta: 18.9MB). Free memory was 26.0MB in the beginning and 51.1MB in the end (delta: -25.1MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2021-11-25 18:54:45,223 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.91ms. Allocated memory is still 69.2MB. Free memory was 51.1MB in the beginning and 49.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:54:45,223 INFO L158 Benchmark]: Boogie Preprocessor took 82.77ms. Allocated memory is still 69.2MB. Free memory was 49.5MB in the beginning and 48.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:54:45,224 INFO L158 Benchmark]: RCFGBuilder took 487.69ms. Allocated memory is still 69.2MB. Free memory was 47.8MB in the beginning and 36.4MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 18:54:45,224 INFO L158 Benchmark]: TraceAbstraction took 3193.31ms. Allocated memory was 69.2MB in the beginning and 86.0MB in the end (delta: 16.8MB). Free memory was 36.0MB in the beginning and 63.3MB in the end (delta: -27.3MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2021-11-25 18:54:45,225 INFO L158 Benchmark]: Witness Printer took 66.78ms. Allocated memory is still 86.0MB. Free memory was 63.3MB in the beginning and 60.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 18:54:45,228 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 50.3MB. Free memory is still 29.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 488.58ms. Allocated memory was 50.3MB in the beginning and 69.2MB in the end (delta: 18.9MB). Free memory was 26.0MB in the beginning and 51.1MB in the end (delta: -25.1MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.91ms. Allocated memory is still 69.2MB. Free memory was 51.1MB in the beginning and 49.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 82.77ms. Allocated memory is still 69.2MB. Free memory was 49.5MB in the beginning and 48.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 487.69ms. Allocated memory is still 69.2MB. Free memory was 47.8MB in the beginning and 36.4MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3193.31ms. Allocated memory was 69.2MB in the beginning and 86.0MB in the end (delta: 16.8MB). Free memory was 36.0MB in the beginning and 63.3MB in the end (delta: -27.3MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * Witness Printer took 66.78ms. Allocated memory is still 86.0MB. Free memory was 63.3MB in the beginning and 60.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 68]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 194 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 30 IncrementalHoareTripleChecker+Unchecked, 132 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 62 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 12 NumberOfFragments, 36 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 54 ConstructedInterpolants, 19 QuantifiedInterpolants, 316 SizeOfPredicates, 25 NumberOfNonLiveVariables, 216 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant [2021-11-25 18:54:45,238 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 18:54:45,238 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 18:54:45,239 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 18:54:45,239 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)), ~Pluszero~LONGDOUBLE()) == \result) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant [2021-11-25 18:54:45,240 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 18:54:45,240 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 18:54:45,240 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 18:54:45,241 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: \result == 1bv32 - InvariantResult [Line: 15]: Loop Invariant [2021-11-25 18:54:45,242 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 18:54:45,242 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 18:54:45,242 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 18:54:45,242 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)), ~Pluszero~LONGDOUBLE()) == x) RESULT: Ultimate proved your program to be correct! [2021-11-25 18:54:45,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734af243-4d61-4cab-8b1c-8e2338878db2/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE